Seen that happen once before with a TS250ER which had been fitted with a TS250C CDI unit.
It started correctly and my mate rode off around the block. When he stopped at a junction it went the other way when restarted. I couldn't understand why it took him so long until he came back, literally.
Bike breaker Roger Neale rolled about laughing when I took it back.
despite the setbacks it was a good day and a brilliant ride out so thanks for that. Nick I hope the bike is up and running forwards again soon, good to put a face to a name Lee, and your missus and Charlie played a blinder!!